/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.jasper.compiler;

import org.apache.jasper.JasperException;

/**
 * Default implementation of ErrorHandler interface.
 * 
 * @author Jan Luehe
 */
class DefaultErrorHandler implements ErrorHandler {

	/*
	 * Processes the given JSP parse error.
	 * 
	 * @param fname Name of the JSP file in which the parse error occurred
	 * @param line Parse error line number @param column Parse error column
	 * number @param errMsg Parse error message @param exception Parse exception
	 */
	public void jspError(String fname, int line, int column, String errMsg,
			Exception ex) throws JasperException {
		throw new JasperException(fname + "(" + line + "," + column + ")" + " "
				+ errMsg, ex);
	}

	/*
	 * Processes the given JSP parse error.
	 * 
	 * @param errMsg Parse error message @param exception Parse exception
	 */
	public void jspError(String errMsg, Exception ex) throws JasperException {
		throw new JasperException(errMsg, ex);
	}

	/*
	 * Processes the given javac compilation errors.
	 * 
	 * @param details Array of JavacErrorDetail instances corresponding to the
	 * compilation errors
	 */
	public void javacError(JavacErrorDetail[] details) throws JasperException {

		if (details == null) {
			return;
		}

		Object[] args = null;
		StringBuffer buf = new StringBuffer();

		for (int i = 0; i < details.length; i++) {
			if (details[i].getJspBeginLineNumber() >= 0) {
				args = new Object[] {
						new Integer(details[i].getJspBeginLineNumber()),
						details[i].getJspFileName() };
				buf.append("\n\n");
				buf.append(Localizer.getMessage("jsp.error.single.line.number",
						args));
				buf.append("\n");
				buf.append(details[i].getErrorMessage());
				buf.append("\n");
				buf.append(details[i].getJspExtract());
			} else {
				args = new Object[] { new Integer(details[i]
						.getJavaLineNumber()) };
				buf.append("\n\n");
				buf.append(Localizer.getMessage("jsp.error.java.line.number",
						args));
				buf.append("\n");
				buf.append(details[i].getErrorMessage());
			}
		}
		buf.append("\n\nStacktrace:");
		throw new JasperException(Localizer
				.getMessage("jsp.error.unable.compile")
				+ ": " + buf);
	}

	/**
	 * Processes the given javac error report and exception.
	 * 
	 * @param errorReport
	 *            Compilation error report
	 * @param exception
	 *            Compilation exception
	 */
	public void javacError(String errorReport, Exception exception)
			throws JasperException {

		throw new JasperException(Localizer
				.getMessage("jsp.error.unable.compile"), exception);
	}

}
